如何告诉Json.NET忽略第三方对象中的属性？

Json.NET文档说您使用JsonIgnore来序列化类中的某些属性：

 public class Account { public string FullName { get; set; } public string EmailAddress { get; set; } [JsonIgnore] public string PasswordHash { get; set; } } 

在使用JsonConvert.SerializeObject序列化第三方对象时，如何使Json.NET忽略特定属性？

Answer 1

制作自定义合约解析程序：

 public class ShouldSerializeContractResolver : DefaultContractResolver { public static ShouldSerializeContractResolver Instance { get; } = new ShouldSerializeContractResolver(); protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization) { JsonProperty property = base.CreateProperty(member, memberSerialization); if (typeof(Account).IsAssignableFrom(member.DeclaringType) && member.Name == nameof(Account.PasswordHash)) { property.Ignored = true; } return property; } } 

我如何测试它：

  var account = new Account { PasswordHash = "XXAABB" }; var settings = new JsonSerializerSettings { ContractResolver = ShouldSerializeContractResolver.Instance }; var json = JsonConvert.SerializeObject(account, settings); Console.WriteLine(json);